This link cable works great on my Pro. The chip in the cable box allows the battery to safely discharge to 78-80% then maintains it there, or charges it if it’s below that. Running my Pro at 800mbps bitrate with no issues. However I don’t think the Quest 2 chip can decode as quickly so you probably want to stay at 500 or below.

https://www.amazon.com/dp/B0BJ7BX35C?ref_=cm_sw_r_apin_dp_R0BQYM4VTZGNR4NN1TWB